January 23, 2007
From: Karen Curtis-Vincent
Note added 21 September 2008: I am considering this a distinct species - Halgerda sp. 8.
I found this nudibranch yesterday & having looked in a few books available to me it looks like it belongs to Halgerda. Closest I've found is Halgerda willeyi although the literature states the ones found in the red sea have black marking whereas the one I observed had dark reddish markings.
Can you confirm if you think this is Halgerda willeyi or something else.
Locality: Shark's Bay, Sharm El Sheikh, ~25m, Egypt, Red Sea, 16 Jan 07, Reef Wall. Photographer: Karen Curtis.
email@example.comCurtis-Vincent, K., 2007 (Jan 23) Halgerda okinawa? from the Red Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19246
It doesn't look like H. willeyi, a species that doesn't have brown (or black) markings like this on the underside of the mantle. One possibility is that it is a form of Halgerda okinawa, but it is a long way from 'home'. Despite the good work Halgerda has received in recent years, I am afraid we still have a lot to learn about species of the genus.